The fate of South America’s endemic mammalian fauna in response to the most dramatic Cenozoic climate disruption

Autores
Buffan, Lucas Llilian Armand; Condamine, Fabien; Stutz, Narla Shannay; Pujos, François Roger Francis; Antoine, Pierre Olivier; Marivaux, Laurent
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Around 34 Mya, the Eocene−Oligocene transition (EOT) marked the most dramatic global climatic cooling of the Cenozoic. On a planetary scale, paleontological evidence suggests that this transition was associated with major faunal turnovers, sometimes even regarded as a mass extinction crisis. In South America, there is no consensus on the response of the endemic mammals to this transition. Here, using a vetted fossil dataset and cutting-edge Bayesian methods, we analyzed the dynamics of South American mammal (SAM) diversification and their possible drivers across latitude (tropical vs. extratropical), taxonomic groups, and trophic guilds throughout the Eocene−Oligocene (ca. 56 to 23 Ma). Our results did not evidence any mass extinction among SAM at the EOT. Instead, they experienced a gradual and long-term diversity decline from the middle Eocene to the early Oligocene, followed by a sudden waxing-and-waning diversity associated with a large taxonomic—but not ecological—turnover. Tropical and extratropical lineages have had very distinct macroevolutionary histories. No effective change in the pace at which tropical lineages diversify was found, thus favoring the tropical stability hypothesis proposed by Wallace. Diversity-dependent effects, temperature, and Andean uplift were recovered as probable drivers of SAM diversification across the period. Contrasting evidence casts doubt on the common hypothesis primarily linking Oligocene faunal changes to grassland expansion. Our findings illustrate the uniqueness of the deep-time interplay between endemic SAM and their physical environment in a context of climatic shift, highlighting the need to consider regional idiosyncrasies for understanding the coevolution of life and climate.
Fil: Buffan, Lucas Llilian Armand. Université de Montpellier; Francia
Fil: Condamine, Fabien. Université de Montpellier; Francia
Fil: Stutz, Narla Shannay. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina. Université de Montpellier; Francia
Fil: Pujos, François Roger Francis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Antoine, Pierre Olivier. Université de Montpellier; Francia
Fil: Marivaux, Laurent. Université de Montpellier; Francia
Materia
Biological crisis
Eocene−Oligocene transition
Diversification dynamics
Multivariate analyses
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/290952
Acceder
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network_name_str CONICET Digital (CONICET)
spelling The fate of South America’s endemic mammalian fauna in response to the most dramatic Cenozoic climate disruptionBuffan, Lucas Llilian ArmandCondamine, FabienStutz, Narla ShannayPujos, François Roger FrancisAntoine, Pierre OlivierMarivaux, LaurentBiological crisisEocene−Oligocene transitionDiversification dynamicsMultivariate analyseshttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Around 34 Mya, the Eocene−Oligocene transition (EOT) marked the most dramatic global climatic cooling of the Cenozoic. On a planetary scale, paleontological evidence suggests that this transition was associated with major faunal turnovers, sometimes even regarded as a mass extinction crisis. In South America, there is no consensus on the response of the endemic mammals to this transition. Here, using a vetted fossil dataset and cutting-edge Bayesian methods, we analyzed the dynamics of South American mammal (SAM) diversification and their possible drivers across latitude (tropical vs. extratropical), taxonomic groups, and trophic guilds throughout the Eocene−Oligocene (ca. 56 to 23 Ma). Our results did not evidence any mass extinction among SAM at the EOT. Instead, they experienced a gradual and long-term diversity decline from the middle Eocene to the early Oligocene, followed by a sudden waxing-and-waning diversity associated with a large taxonomic—but not ecological—turnover. Tropical and extratropical lineages have had very distinct macroevolutionary histories. No effective change in the pace at which tropical lineages diversify was found, thus favoring the tropical stability hypothesis proposed by Wallace. Diversity-dependent effects, temperature, and Andean uplift were recovered as probable drivers of SAM diversification across the period. Contrasting evidence casts doubt on the common hypothesis primarily linking Oligocene faunal changes to grassland expansion. Our findings illustrate the uniqueness of the deep-time interplay between endemic SAM and their physical environment in a context of climatic shift, highlighting the need to consider regional idiosyncrasies for understanding the coevolution of life and climate.Fil: Buffan, Lucas Llilian Armand. Université de Montpellier; FranciaFil: Condamine, Fabien. Université de Montpellier; FranciaFil: Stutz, Narla Shannay. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina. Université de Montpellier; FranciaFil: Pujos, François Roger Francis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; ArgentinaFil: Antoine, Pierre Olivier. Université de Montpellier; FranciaFil: Marivaux, Laurent. Université de Montpellier; FranciaNational Academy of Sciences2025-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/290952Buffan, Lucas Llilian Armand; Condamine, Fabien; Stutz, Narla Shannay; Pujos, François Roger Francis; Antoine, Pierre Olivier; et al.; The fate of South America’s endemic mammalian fauna in response to the most dramatic Cenozoic climate disruption; National Academy of Sciences; Proceedings of the National Academy of Sciences of The United States of America; 122; 20; 5-2025; 1-111091-64900027-8424CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/altIdentifier/doi/10.1073/pnas.2419520122info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-08-25T14:53:54Zoai:ri.conicet.gov.ar:11336/290952instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982026-08-25 14:53:55.304CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The fate of South America’s endemic mammalian fauna in response to the most dramatic Cenozoic climate disruption
title The fate of South America’s endemic mammalian fauna in response to the most dramatic Cenozoic climate disruption
spellingShingle The fate of South America’s endemic mammalian fauna in response to the most dramatic Cenozoic climate disruption
Buffan, Lucas Llilian Armand
Biological crisis
Eocene−Oligocene transition
Diversification dynamics
Multivariate analyses
title_short The fate of South America’s endemic mammalian fauna in response to the most dramatic Cenozoic climate disruption
title_full The fate of South America’s endemic mammalian fauna in response to the most dramatic Cenozoic climate disruption
title_fullStr The fate of South America’s endemic mammalian fauna in response to the most dramatic Cenozoic climate disruption
title_full_unstemmed The fate of South America’s endemic mammalian fauna in response to the most dramatic Cenozoic climate disruption
title_sort The fate of South America’s endemic mammalian fauna in response to the most dramatic Cenozoic climate disruption
dc.creator.none.fl_str_mv Buffan, Lucas Llilian Armand
Condamine, Fabien
Stutz, Narla Shannay
Pujos, François Roger Francis
Antoine, Pierre Olivier
Marivaux, Laurent
author Buffan, Lucas Llilian Armand
author_facet Buffan, Lucas Llilian Armand
Condamine, Fabien
Stutz, Narla Shannay
Pujos, François Roger Francis
Antoine, Pierre Olivier
Marivaux, Laurent
author_role author
author2 Condamine, Fabien
Stutz, Narla Shannay
Pujos, François Roger Francis
Antoine, Pierre Olivier
Marivaux, Laurent
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Biological crisis
Eocene−Oligocene transition
Diversification dynamics
Multivariate analyses
topic Biological crisis
Eocene−Oligocene transition
Diversification dynamics
Multivariate analyses
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Around 34 Mya, the Eocene−Oligocene transition (EOT) marked the most dramatic global climatic cooling of the Cenozoic. On a planetary scale, paleontological evidence suggests that this transition was associated with major faunal turnovers, sometimes even regarded as a mass extinction crisis. In South America, there is no consensus on the response of the endemic mammals to this transition. Here, using a vetted fossil dataset and cutting-edge Bayesian methods, we analyzed the dynamics of South American mammal (SAM) diversification and their possible drivers across latitude (tropical vs. extratropical), taxonomic groups, and trophic guilds throughout the Eocene−Oligocene (ca. 56 to 23 Ma). Our results did not evidence any mass extinction among SAM at the EOT. Instead, they experienced a gradual and long-term diversity decline from the middle Eocene to the early Oligocene, followed by a sudden waxing-and-waning diversity associated with a large taxonomic—but not ecological—turnover. Tropical and extratropical lineages have had very distinct macroevolutionary histories. No effective change in the pace at which tropical lineages diversify was found, thus favoring the tropical stability hypothesis proposed by Wallace. Diversity-dependent effects, temperature, and Andean uplift were recovered as probable drivers of SAM diversification across the period. Contrasting evidence casts doubt on the common hypothesis primarily linking Oligocene faunal changes to grassland expansion. Our findings illustrate the uniqueness of the deep-time interplay between endemic SAM and their physical environment in a context of climatic shift, highlighting the need to consider regional idiosyncrasies for understanding the coevolution of life and climate.
Fil: Buffan, Lucas Llilian Armand. Université de Montpellier; Francia
Fil: Condamine, Fabien. Université de Montpellier; Francia
Fil: Stutz, Narla Shannay. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina. Université de Montpellier; Francia
Fil: Pujos, François Roger Francis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Antoine, Pierre Olivier. Université de Montpellier; Francia
Fil: Marivaux, Laurent. Université de Montpellier; Francia
description Around 34 Mya, the Eocene−Oligocene transition (EOT) marked the most dramatic global climatic cooling of the Cenozoic. On a planetary scale, paleontological evidence suggests that this transition was associated with major faunal turnovers, sometimes even regarded as a mass extinction crisis. In South America, there is no consensus on the response of the endemic mammals to this transition. Here, using a vetted fossil dataset and cutting-edge Bayesian methods, we analyzed the dynamics of South American mammal (SAM) diversification and their possible drivers across latitude (tropical vs. extratropical), taxonomic groups, and trophic guilds throughout the Eocene−Oligocene (ca. 56 to 23 Ma). Our results did not evidence any mass extinction among SAM at the EOT. Instead, they experienced a gradual and long-term diversity decline from the middle Eocene to the early Oligocene, followed by a sudden waxing-and-waning diversity associated with a large taxonomic—but not ecological—turnover. Tropical and extratropical lineages have had very distinct macroevolutionary histories. No effective change in the pace at which tropical lineages diversify was found, thus favoring the tropical stability hypothesis proposed by Wallace. Diversity-dependent effects, temperature, and Andean uplift were recovered as probable drivers of SAM diversification across the period. Contrasting evidence casts doubt on the common hypothesis primarily linking Oligocene faunal changes to grassland expansion. Our findings illustrate the uniqueness of the deep-time interplay between endemic SAM and their physical environment in a context of climatic shift, highlighting the need to consider regional idiosyncrasies for understanding the coevolution of life and climate.
publishDate 2025
dc.date.none.fl_str_mv 2025-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/290952
Buffan, Lucas Llilian Armand; Condamine, Fabien; Stutz, Narla Shannay; Pujos, François Roger Francis; Antoine, Pierre Olivier; et al.; The fate of South America’s endemic mammalian fauna in response to the most dramatic Cenozoic climate disruption; National Academy of Sciences; Proceedings of the National Academy of Sciences of The United States of America; 122; 20; 5-2025; 1-11
1091-6490
0027-8424
CONICET Digital
CONICET
url http://hdl.handle.net/11336/290952
identifier_str_mv Buffan, Lucas Llilian Armand; Condamine, Fabien; Stutz, Narla Shannay; Pujos, François Roger Francis; Antoine, Pierre Olivier; et al.; The fate of South America’s endemic mammalian fauna in response to the most dramatic Cenozoic climate disruption; National Academy of Sciences; Proceedings of the National Academy of Sciences of The United States of America; 122; 20; 5-2025; 1-11
1091-6490
0027-8424
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/
info:eu-repo/semantics/altIdentifier/doi/10.1073/pnas.2419520122
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv National Academy of Sciences
publisher.none.fl_str_mv National Academy of Sciences
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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